For ease of installation, insert all flange bolts through the valve flange and then through the sleeve flange, but do not let the bolts extend beyond the surface of the flange rubber (See Figure 4).

为了使安装容易些，可以将所有法兰螺栓穿过阀门法兰，然后穿过套管法兰，但是不要让螺栓超过法兰橡胶表面(参阅图4)。

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Note: You may increase the torque on the rubber sleeve up to two times the specified value without causing sleeve or flange damage.

注意：在橡胶套管上增加的扭矩可以达到规定扭矩值的两倍，在此时仍然不会对套管或法兰造成损害。

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Mating flange ID must match sleeve ID.

配套法兰内径必须与套管内径匹配。

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